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authorJames Hogan <james.hogan@imgtec.com>2015-01-29 11:14:13 +0000
committerRalf Baechle <ralf@linux-mips.org>2015-03-31 12:04:12 +0200
commite934945db7625716f9cc469e31fc5da8666c8024 (patch)
treeec3381a503bb92b2d40ee656e8b9b4b222add244 /arch/mips/include
parent4cebec609aea6dff23e67a42b6516d852fa87d07 (diff)
downloadblackbird-obmc-linux-e934945db7625716f9cc469e31fc5da8666c8024.tar.gz
blackbird-obmc-linux-e934945db7625716f9cc469e31fc5da8666c8024.zip
MIPS, ttyFDC: Add early FDC console support
Add support for early console of MIPS Fast Debug Channel (FDC) on channel 1 with a call very early from the MIPS setup_arch(). Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jslaby@suse.cz> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/9145/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include')
-rw-r--r--arch/mips/include/asm/cdmm.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/mips/include/asm/cdmm.h b/arch/mips/include/asm/cdmm.h
index b7d520f28d30..16e22ce9719f 100644
--- a/arch/mips/include/asm/cdmm.h
+++ b/arch/mips/include/asm/cdmm.h
@@ -84,4 +84,15 @@ void mips_cdmm_driver_unregister(struct mips_cdmm_driver *);
module_driver(__mips_cdmm_driver, mips_cdmm_driver_register, \
mips_cdmm_driver_unregister)
+/* drivers/tty/mips_ejtag_fdc.c */
+
+#ifdef CONFIG_MIPS_EJTAG_FDC_EARLYCON
+int setup_early_fdc_console(void);
+#else
+static inline int setup_early_fdc_console(void)
+{
+ return -ENODEV;
+}
+#endif
+
#endif /* __ASM_CDMM_H */
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